Manufacturing of film feeding and tension control system

The manufacturing process of film feeding and tension control system focuses on ensuring the smoothness and accuracy of water-soluble film transportation.

Firstly, design a unwinding mechanism based on the width (usually 200-500mm) and thickness (40-80 μ m) of the film, equipped with magnetic powder brakes or servo motors to control the unwinding speed, and install correction sensors (such as photoelectric correction or ultrasonic correction) to ensure that there is no deviation during the film transportation process.

The manufacturing of tension controllers requires the integration of tension sensors and PID regulation modules to detect the tension value of the film in real time (usually controlled between 5-15N), and automatically adjust the unwinding/rewinding speed to avoid the film from breaking or wrinkling due to excessive tension or insufficient tension.

The processing of the guide roller requires the use of stainless steel material, with a precision polished surface to reduce friction damage to the film.

After the system assembly, a film transport test is required. The PVA film used in actual production should be continuously operated for more than 2 hours to detect the correction accuracy (± 0.5mm) and tension fluctuation range (± 1N), ensuring that it meets the process requirements for subsequent molding and packaging.